Artikel 4

1. Each Member which ratifies this Convention shall take the necessary measures, by way of a system of supervision and sanctions, to ensure that the employers and workers concerned are informed of the minimum rates of wages in force and that wages are not paid at less than these rates in cases where they are applicable.
2. A worker to whom the minimum rates are applicable and who has been paid wages at less than these rates shall be entitled to recover, by judicial or other legalised proceedings, the amount by which he has been underpaid, subject to such limitation of time as may be determined by national laws or regulations.